31093 -- U.S. ZIP code Municipality (1990): WARNER ROBINS, Georgia All ZIPs for this municipality (1990): 31088 31093 Population (2000): 27710 Housing Units (2000): 12134 Land area (2000): 20.430451 sq. miles (52.914623 sq. km) Water area (2000): 0.108577 sq. miles (0.281213 sq. km) Total area (2000): 20.539028 sq. miles (53.195836 sq. km) Located within: Georgia (GA) Location: 32.638316 N, 83.643321 W